DEVELOPMENT AND CLINICAL APPLICATION OF A REHABILITATION DEVICE AFTER ARTHROSCOPIC SURGERY OF THE TMJ

本研究的目的是开发一种简单的开口训练装置，以防止关节镜下TMJ手术后肌肉挛缩。我们对新开发的聚乙烯液压泵进行了抗压强度测试，该液压泵是一种用于开口训练装置的内置泵，直到漏水。压缩试验采用Autograph G10KN1 (Shimadzu)，压缩率为5、10和20 mm/min，压缩强度分别为150.0、397.0和388.1 N。考虑到人类的咬合力，这种聚乙烯液压泵似乎具有足够的强度。接下来，确定开口训练装置的形状，制作试验装置。用车床切割铝筒，并对其进行改造，得到了ⅰ型试验产品。制作了金属模具，获得了ⅱ型试制产品。临床应用方面，2例患者在关节镜下颞下颌关节手术后，使用试用产品II型配合聚乙烯液压泵进行开口训练。对新装置与传统气送式橡胶开口训练装置的使用感觉进行了研究和比较。新设备的效果更好。

The purpose or this study was to develop a simple mouth-opening training device to prevent muscle contracture after arthroscopic surgery of the TMJ. We performed a compression strength test of a newly developed polyethylene hydraulic pump, which is a built-in pump for the mouth-opening training device, until water leakage. The compression test was performed using an Autograph G10KN1 (Shimadzu) at a compression rate of 5, 10, and 20 mm/min, and the compression strengths were 150.0, 397.0, and 388.1 N, respectively. Considering occlusion force in humans, this polyethylene hydraulic pump appeared to have adequate strength. Next, to determine the shape of the mouth-opening training device, trial devices were produced.Trial product type I was obtained by cutting aluminum cylinders using a lathe and modified. A metal mold was produced, and trial product type II was obtained. For clinical application, trial product type II with a polyethylene hydraulic pump was used for mouth-opening training after arthroscopic surgery of the TMJ in 2 patients. The feeling during use was investigated and compared between the new device and conventional air-delivery type rubber mouth-opening training device. The results were better for the new device.